Fascination About Crystal

Fascination About Crystal

Blog Article

轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。

无色水晶以晶莹美丽、洁净透明着称。衡量无色水晶主要看它的纯度，越纯、越透明越好。干净的、无瑕疵的、杂质少的价值就高。无色的水晶如果很脏，就没有利用价值。

景观水晶，就是包裹体组成各种造型特异的水晶，有的似山水，有的似人物，有些像文字，有些像动物，植物，器物等等。

③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。

《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”

Not all crystals sort in water, but almost all crystals form the exact same way, atoms appear together and turn into a uniformed cluster. The process might take as minor as a couple of days to possibly a thousand yrs. Natural crystals that come from the Earth form the identical way.

Springer Mother nature continues to be neutral regarding jurisdictional claims in released maps and institutional affiliations.

1A crystal chandelier lit the place.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》

13Nearly all desktops comprise a quartz-crystal clock to control their operation.几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。

A crystal procedure refers back to the classification of crystals based on the geometric arrangement and symmetry in their lattice buildings. You will find seven major crystal techniques:

看孔眼：对于缀穿水晶制品（如项链、手链、佛珠），要看孔眼是否平直，孔的粗细是否均匀，有无细小裂纹。孔壁必须清澈透明，无“白痕”。

Molecular Crystals: Full molecules are bonded to one another within an organized way. A great instance is actually a sugar crystal, which includes sucrose molecules.

《古今小说·李公子救蛇获称心》：“器皿皆是玻璃、水晶、琥珀、玛瑙为之，曲尽巧妙，非人间所有。”

One more sort of crystalline carbon is predicated with a molecule with 60 carbon atoms referred to as buckminsterfullerene (C60). The molecular form is spherical. Every carbon is bonded to a few neighbours, as in graphite, as well as the spherical shape is attained by a combination of twelve rings with 5 sides and twenty rings with 6 sides. Similar constructions ended up very first visualized from the American architect R. click here Buckminster Fuller for geodesic domes.